What MJ & Cie does

MJ & Cie is an independent multi-family office headquartered in Paris, founded in 2001 by François Mollat du Jourdin and Corinne Louis as the first independent multi-family office in France. The firm serves wealthy families, entrepreneurs, family businesses, foundations, and international private investors through five service pillars: investment advisory, legal and tax structuring, family governance and succession planning, corporate advisory, and private secretarial services. It operates on a fee-only model with bespoke fixed fees, multi-year open-ended contracts (3-month notice), and no commissions or retrocommissions, aligning interests with clients and eliminating product-driven conflicts of interest.

The company supports its advisory work with a proprietary digital asset consolidation platform administered in Switzerland, delivering real-time consolidated reporting across financial, personal, and professional assets, including allocation, risk, performance, and fee analysis. Operations span Paris (109 boulevard Haussmann, since 2001) and Geneva (Rue du Stand 51, since 2014), with regulatory oversight through AMF and ACPR via CNCEF PATRIMOINE/ASSURANCE/CRÉDIT membership and ORIAS registration (No. 07004635) covering Financial Investment Advisor, Insurance Broker (COA), and Banking/Payment Services Broker (COBSP) activities. Internationally, MJ & Cie extends its capabilities through the Swiss subsidiary NSC Advisor (2023) for corporate advisory in EMEA, and the co-founded 3B Alliance with asset management and M&A partners to serve entrepreneurs during liquidity events, while maintaining leadership roles in AFFO and ENFO industry associations.

Name

MJ & Cie

Legal name

MJ&Cie

Website

https://mj-et-cie.com

Company type

Private

Founded year

2001

Operating status

Operating

Headcount range

11–50 employees

Short description

MJ & Cie is an independent multi-family office founded in Paris in 2001, providing fee-only investment advisory, legal and tax structuring, family governance, and corporate advisory services to wealthy families, entrepreneurs, and family businesses from offices in Paris and Geneva.

Ownership category

akta.pro rank

Product category

Multi-Family Office Services

NAICS

Portfolio Management and Investment Advice (523940), Legal Services (5411)

SIC

Investment Advice (6282), Services-Legal Services (8111)

akta.pro primary industry

Multi-Family Offices (MFOs) (FSAAADAB)

akta.pro secondary industries

Family Office Technology & Data (Portfolio, Reporting, Cybersecurity) (FSAAADAN), Family Office Investment Platforms & Direct Investing (PE/VC/Co-Invest) (FSAAADAH), M&A Advisory (Buy-side/Sell-side) (BPAHADAC)

Keywords

• Multi-family office services
• Wealth management advisory
• Family governance consulting
• Investment advisory services
• Corporate advisory services

Headquarters

HQ city

Paris

HQ country

France

HQ region

Europe

Offices2 records

Markets served

GTM type

B2C

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure, Others

Revenue model

1. Fee-Only Advisory Services: MJ&Cie operates exclusively on a fee-only basis, compensated through transparent, fixed fees agreed in advance with clients. This model guarantees complete independence from product sales and eliminates any conflicts of interest. The firm does not receive retrocommissions or indirect remuneration.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

MJ&Cie is an independent multi-family office providing comprehensive wealth management and advisory services to high-net-worth families and entrepreneurs. Its offering spans investment advisory, legal and tax structuring, family governance, corporate advisory, and private secretarial services, supported by offices in Paris and Geneva and a proprietary Swiss-hosted digital consolidation platform for reporting.

Product overview

MJ&Cie is a multi-family office offering a comprehensive suite of wealth management services through its core Family Office Services platform. The offering spans five main areas: investment advice, legal and tax structuring, family governance, corporate advisory, and private secretarial services. The company operates internationally through offices in Paris and Geneva, supported by its Swiss subsidiary NSC Advisor for corporate advisory and the 3B Alliance partnership for integrated entrepreneur services. A digital asset consolidation platform enables consolidated wealth reporting for clients.

Differentiator

Problem solved

Functional benefit

Brands

• NSC Advisor: Swiss subsidiary dedicated to corporate advisory and corporate servicing for family businesses in Europe, Middle East, and Africa, led by partner Alexandre Nahas.
• 3B Alliance

Products and services

• Family Office Services Comprehensive wealth management advisory services for wealthy families and entrepreneurs, covering investment advisory, legal and tax structuring, family governance and succession, corporate advisory, and private secretarial support across all asset classes including listed, private equity, real estate, and art.
• NSC Advisor Geneva-based Swiss subsidiary of MJ&Cie providing corporate advisory and corporate servicing for family businesses in Europe, the Middle East, and Africa, including strategic development analysis, financing advice, financial partner introductions, banking relationship management, and international real estate project services; led by partner Alexandre Nahas.
• Digital Asset Consolidation Platform Proprietary digital platform offered to clients, providing consolidated reporting of entire wealth — including assets, liabilities, personal and professional belongings, and collections — with web access, data administered in Switzerland. Enables tracking of wealth evolution asset by asset and analysis of allocations, risks, performance, fees, and key data for complete wealth oversight.

Quantifiable outcome

• European Family Office of the Year 2009
• +1 more outcomes

Segments5 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

Six partnerships are on record, tiered core and minor.

• NSC AdvisorcoreStrategic or Co-development Partner · 1 January 2023Swiss subsidiary of MJ&Cie dedicated to corporate advisory and corporate servicing for family businesses based in Europe, Middle East, and Africa. Led by partner Alexandre Nahas, NSC Advisor provides strategic development analysis, financing advice, financial partner introductions, banking relationship management, and international real estate project services. The subsidiary extends MJ&Cie's capabilities in serving entrepreneurs and family enterprises across international markets.
• 3B AlliancecoreStrategic or Co-development PartnerCo-founded by MJ&Cie alongside leading players in asset management and M&A advisory. The alliance provides comprehensive, integrated services for entrepreneurs during major liquidity events, combining complementary and independent expertise. Built on three pillars: excellence, transparency, and independence. Members include MJ&Cie for family office services, along with recognized professionals in wealth management and corporate advisory.
• AFFO (Association Française du Family Office)coreStrategic or Co-development PartnerActive member of the French Family Office Association. François Mollat du Jourdin served as secretary general for many years and now develops the association's international outreach. The firm participates in AFFO's parliamentary advocacy, industry best practices development, and professional networking events including the annual Family Office Day.
• ENFO (European Network of Family Offices)coreStrategic or Co-development PartnerCo-founded by François Mollat du Jourdin, who serves as president of ENFO. The network strengthens cooperation among members on topics including artificial intelligence applications in operational processes, research, analysis, and reporting. ENFO advances international best practices in family office services across Europe.
• Gen10 SAminorStrategic or Co-development PartnerIndependent service and advisory company for UHNW entrepreneurial families worldwide, founded by Denise Kenyon-Rouvinez, a member of MJ&Cie's Strategic Advisory Board. Gen10 SA offers support programs, mediation, coaching, and training around succession, governance, wealth, philanthropy, and family office issues.
• Strategic Advisory BoardminorStrategic or Co-development PartnerStrategic Advisory Board bringing together recognized professionals including Denise Kenyon-Rouvinez (former Professor Family Business IMD, founder of Gen10 SA), Pierre Guilhem (entrepreneur and founder of Groupe AEGE), Alberto Haddad (real estate investor and venture capitalist), and Laurent Isenegger (partner lawyer at Meyer Avocats). The board contributes to strategic thinking on family office challenges and continuous enhancement of services.

Scale indicators3 records

Recent moves8 records

Expansion highlights6 records

Direct peers

• Indosuez Wealth Management: The wealth-management arm of Crédit Agricole group, operating one of Europe's largest multi-family-office and private-banking platforms with UHNW family services and consolidated reporting. Highly comparable given MJ&Cie's emphasis on independent multi-family-office services to European families and entrepreneurs.
• Syz Group: Swiss family-controlled wealth management group with a private-banking and family-office-style offering for UHNW clients. Similar in profile — privately held, family-led, regulation-licensed, and dependent on trust-based long-term relationships with wealthy European families.

Broad incumbents

• Edmond de Rothschild: Swiss-headquartered private banking and wealth management group with dedicated family-office services and a strong focus on entrepreneurial families across Europe. Overlaps directly with MJ&Cie's family governance, investment advisory, and corporate advisory offerings, but at materially larger scale.
• Lombard Odier: Geneva-based private bank offering wealth management, family services, and corporate advisory; partners with single- and multi-family-office clients. Comparable as a regulated, established Swiss competitor serving UHNW families in the same Paris-Geneva corridor where MJ&Cie operates.
• Pictet Group: Swiss private bank with significant wealth-management, asset-management, and family-office-style advisory offerings. Competes for UHNW families in Geneva and internationally, with technology and reporting capabilities that compete with MJ&Cie's proprietary digital consolidation platform.
• Rothschild & Co: Global advisory and private banking group with French roots, providing wealth and asset management, and corporate advisory to UHNW and entrepreneurial families. Directly overlaps with MJ&Cie's entrepreneur and family-shareholder segment, particularly through M&A and capital-events advisory.
• Lazard Family Office Services: The wealth and asset management arm of Lazard offering multi-family office services to UHNW families, including investment advisory, succession, and corporate advisory. Overlaps in providing integrated advisory to family-controlled businesses, complementing MJ&Cie's NSC Advisor and 3B Alliance offerings.
• Société Générale Private Banking: The private banking arm of Société Générale serving HNW and UHNW clients across France, Switzerland, and international markets. Competes with MJ&Cie specifically for French entrepreneurial families seeking banking, lending, and wealth advisory integrated with corporate finance.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 records

Subsidiaries2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about MJ & Cie